/Engine/Source/Runtime/SignalProcessing/Public/DSP/MultichannelBuffer.h
A deinterleaved multichannel buffer view. The semantics are similar to TArray<> and TArrayView<>. FMultichannelBufferView allows sample values to be read and written, but it cannot be resized.
typedef [TArray](API\Runtime\Core\Containers\TArray)< [TArrayView](API\Runtime\Core\Containers\TArrayView)< float >> FMultichannelBufferView